JP2006274858A - Radiator core support structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide radiator core support structure, for fixing an opening end part of a shroud part and a fan ring part of a fan shroud with a state where they are easily and closely attached to each other, regardless of error in component accuracy of a radiator core support and the fan shroud. <P>SOLUTION: In the structure of the radiator core support 1, the shroud part 3 of the fan shroud 2 is formed integrally with the resin radiator core support 1, and the fan ring part 2c of the resin fan shroud 2 is fixed with the annular opening end part 3b formed in the shroud part 3 together with a body part 2a. A first rib 6 projecting outward in a radial direction from an outer periphery of the fan ring part 2c is formed to the fan ring part 2c, and the first rib 6 is elastically deformed by overlapping the first rib 6 and the opening end part 3b of the shroud part 3 to fix them with a closely attached state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a radiator core support structure.

Conventionally, a radiator core support as a heat exchanger carrier is mounted with a fan shroud for accommodating a fan that cools the core of the heat exchanger.
The fan shroud is composed of a main body part for supporting the fan, a cylindrical fan ring part connected from the main body part via a plurality of fan stay parts, and a shroud part for collecting air to the fan. In general, these are all integrally formed of resin (see Patent Documents 1 and 2).

In recent years, the radiator core support is integrally formed by injection molding with resin, and accordingly, the shroud portion of the fan shroud is integrally formed with the radiator core support, and the opening end provided in the shroud portion is also formed. A technology of a radiator core support structure in which a fan ring part of a fan shroud is fixed to a part together with a main body part is known (see Patent Document 3).
JP-A-10-280960 JP 2002-1114025 A JP 2005-47370 A

  However, in the conventional radiator core support structure, due to errors in component accuracy between the radiator core support and the fan shroud, etc., when the opening end of the shroud and the fan ring of the fan shroud are overlapped, There was a problem that gaps were likely to occur. If a gap is generated between the two, wind passes through the gap to generate transmitted sound or cause vibration.

  Therefore, when the opening end of the shroud part and the fan ring part of the shroud part are overlapped, it is conceivable that they are fixed in a state of strong interference, but since both are made of resin, excessive pressure is applied. Added, there was a risk of cracking or breakage.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to permit an error in the accuracy of the parts of the radiator core support and the fan shroud, and at the same time to open the shroud portion and the fan shroud. It is providing the radiator core support structure which can fix the fan ring part of this in the state which contact | adhered substantially easily.

  According to the first aspect of the present invention, a fan shroud portion is integrally formed on a resin radiator core support, and a resin fan is provided at an annular opening end provided in the shroud portion. In the radiator core support structure in which the fan ring portion of the shroud is fixed together with the main body portion, a first rib protruding radially outward from the outer periphery of the fan ring portion is formed, and the first rib and the open end of the shroud portion The first ribs or the open end portions are elastically deformed by overlapping the portions, and are fixed in a state where they are in close contact with each other.

  According to a second aspect of the present invention, in the radiator core support structure according to the first aspect, the first rib is provided so as to protrude in an inclined manner from the outer periphery of the fan ring portion toward the opening end side of the shroud portion. The first rib and the open end of the shroud portion are overlapped and elastically deformed so that the diameter of the first rib is increased outward in the radial direction, thereby fixing the two in close contact with each other. And

  According to a third aspect of the invention, in the radiator core support structure according to the first aspect, the opening end portion of the shroud portion is provided so as to protrude in an inclined manner toward the first rib side, and the opening of the shroud portion is provided. The end portion and the first rib are overlapped, and the opening end portion of the shroud portion is elastically deformed so as to be reduced inward in the radial direction, thereby fixing the two in close contact with each other.

  According to a fourth aspect of the present invention, in the radiator core support structure according to any one of the first to third aspects, the shroud portion opens from the opening end portion along the circumference of the first rib to the first rib side. A protruding second rib is provided.

  In the invention according to claim 1 of the present invention, the shroud portion of the fan shroud is integrally formed on the resin radiator core support, and the annular opening end portion provided in the shroud portion is provided with resin. In a radiator core support structure in which a fan ring part of a fan shroud made of steel is fixed together with a main body part, a first rib protruding radially outward from an outer periphery of the fan ring part is formed, and the first rib and the shroud part Since the first rib or the opening end is elastically deformed by overlapping the opening end portions of the two, the two are fixed in a state of being in close contact with each other, so that an error in the component accuracy between the radiator core support and the fan shroud is caused by the first rib. Or, it can be allowed by elastic deformation of the opening end, and at the same time, the opening end of the shroud and the fan ring of the fan shroud It can be fixed in close contact with the easily.

  In the invention according to claim 2, the first rib is provided so as to protrude from the outer periphery of the fan ring portion toward the opening end side of the shroud portion, and the first rib and the shroud portion. Since the first ribs are elastically deformed so as to expand radially outward by overlapping the open end portions of the two, the two ribs are fixed in close contact with each other. Due to the deformation, an error in the accuracy of the parts of the radiator core support and the fan shroud can be allowed, and at the same time, the opening end portion of the shroud portion and the fan ring portion of the fan shroud can be fixed in a state of being almost in close contact with each other.

  In the invention according to claim 3, the opening end portion of the shroud portion is provided so as to protrude in an inclined manner toward the first rib side, and the opening end portion of the shroud portion and the first rib are overlapped. In addition, since the opening end of the shroud portion is elastically deformed so that the diameter of the shroud is reduced radially inward, the two are fixed in a state of being in close contact with each other. The tolerance of the component accuracy of the fan shroud can be allowed, and at the same time, the opening end portion of the shroud portion and the fan ring portion of the fan shroud can be easily fixed.

  In the invention according to claim 4, since the second rib protruding from the opening end portion of the shroud portion toward the first rib side is provided along the periphery of the first rib, the periphery of the opening end portion is provided. The rigidity can be increased, and at the same time, the wind that flows into the opening end portion of the shroud portion and the fan ring portion of the fan shroud can be blocked.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1 will be described below.
1 is an overall rear view showing a radiator core support structure according to a first embodiment of the present invention, FIG. 2 is a rear view of the radiator core support according to the first embodiment, and FIG. 3 is a rear view of the fan shroud according to the first embodiment. 4 is an end view taken along the line S4-S4 of FIG. 3, FIG. 5 is a rear view of the fan of the first embodiment, and FIG. 6 is a diagram for explaining the assembly of the radiator core support and the fan shroud of the first embodiment. In addition, the same code | symbol is attached | subjected about the symmetrical member in the figure.

First, the overall configuration will be described.
As shown in FIG. 1, the radiator core support structure of the first embodiment includes a radiator core support 1 and a fan shroud 2.

As shown in FIG. 2, the radiator core support 1 includes a radiator core support upper 1a extending in the vehicle width direction, a radiator core support lower 1b parallel to the radiator core support upper 1a, and the radiator core support upper 1a. And radiator core support side 1c, 1c for connecting both ends of the radiator core support lower 1b, and a shroud portion provided inside these radiator core support upper 1a, radiator core support lower 1b, and radiator core support side 1c, 1c 3 and the whole is integrally formed of resin.
A part of the entire radiator core support 2 may be made of metal and resin molded.

In addition, openings 3a and 3a are formed on the left and right sides of the shroud 3, and the opening end 3b of each opening 3a is formed in a flat flange shape (see FIG. 6B).
In addition, a second rib 4 protruding rearward is formed on the upper portion of the opening 3a, thereby ensuring the necessary rigidity around the upper portion of the opening 3a.
In the first embodiment, the second rib 4 is provided on the upper portion of the opening 3a. However, the second rib 4 may be provided over the entire circumference of the opening 3a.

  In addition, two fixing holes 3c opened in the front-rear direction are formed in the left and right upper portions of the shroud portion 3, and four bag-shaped insertion receiving portions 3d opened in the upper portion are formed in the lower portion.

  As shown in FIG. 3, the fan shroud 2 is a fan shroud for a so-called double fan in which fans 5 to be described later can be respectively mounted on the left and right sides. There are provided substantially cylindrical main body portions 2a, 2a to be supported, and a substantially cylindrical fan ring portion 2c connected from the main body portions 2a, 2a via a plurality of fan stay portions 2b.

  In addition, the fan ring portions 2c of the main body portions 2a and 2a are connected by a connecting portion 2d, and a fixing portion 2f having a fixing hole 2e is provided at a position corresponding to the fixing hole 3c of the shroud portion 3, Further, an insertion pin 2g protruding downward is formed at a position corresponding to the insertion receiving portion 3d of the shroud portion 3.

Further, as shown in FIG. 4, the fan ring portion 2c is formed in a U-shaped cross-section that opens to the rear side, protrudes radially outward from a midway portion of the outer periphery thereof, and has a shroud. A first rib 6 having an outer diameter somewhat larger than the inner diameter of the opening end 3b of the portion 3 is formed.
In addition, the first rib 6 according to the first embodiment is formed so as to become thinner toward the tip 6a, and thus the first rib 6 is easily elastically deformed in the front-rear direction.

As shown in FIG. 5, the fan 5 is a so-called ring fan in which a substantially cylindrical outer peripheral portion 5a and a substantially cylindrical rotating base portion 5b are connected by a plurality of blades 5c, and the whole is integrally formed of resin. Has been.
As shown in FIG. 4, a motor M is connected to the rotation base 5 b of each fan 5, and the fan 5 and the motor M are connected to the main body of the fan shroud 2 by three bolts B <b> 1 (see FIG. 1). It is fixed to 2a.
The fan 5 is not limited to a ring fan, and may have a general fan shape.

Next, the operation will be described.
When the radiator core support 1 and the fan shroud 2 configured as described above are assembled, the fan shroud 2 in which the fans 5 are mounted in the left and right main body portions 2a in advance is disposed behind the radiator core support 1, and then the fan The mounting pin 2g of the shroud 2 is inserted into the insertion receiving portion 3d of the shroud portion 3 from obliquely above.

Next, the fan shroud 2 is turned to the radiator core support 1 side with the mounting pin 2g as the center to stand up.
At this time, when the mounting pin 2g of the fan shroud 2 is not sufficiently inserted into the insertion receiving portion 3d of the shroud portion 3, the first rib 6 and the second rib 4 of the fan shroud 2 come into contact with each other and are mounted. Since it is found that the insertion depth of the pin 2g is insufficient, the second rib 4 functions as a positioning portion of the first rib 6, in other words, a positioning portion of the fan shroud 2.

  Further, when the fan shroud 2 is largely displaced in the vertical direction due to any cause, the second rib 4 comes into contact with the first rib 6 as a regulating member that regulates the vertical displacement of the fan shroud 2. Function.

  Next, as shown in FIGS. 6A and 6B, the upper portion of the fan shroud 2 is pressed toward the radiator core support 1, and the first rib 6 and the opening end portion 3 b of the shroud portion 3 are overlapped. As a result, the first rib 6 is elastically deformed so as to expand its diameter outward in the radial direction, thereby bringing the two into close contact with each other.

  Finally, bolts (not shown) are inserted into the fixing holes 3c of the shroud 3 and the fixing holes 2e of the fan shroud 2 and fastened with nuts, whereby the assembly of the radiator core support 1 and the fan shroud 2 is completed.

  Here, in the conventional invention, if there is a gap between the opening end portion of the shroud portion and the fan ring portion of the fan shroud due to an error in the accuracy of the parts of the radiator core support and the fan shroud, this gap However, there is a problem that the wind passes through the wind and generates transmitted sound or causes vibration.

  Therefore, when the opening end of the shroud part and the fan ring part of the shroud part are overlapped, it is conceivable that they are fixed in a state of strong interference, but since both are made of resin, excessive pressure is applied. When applied, there was a risk of cracking or breaking.

  However, in the radiator core support structure of the first embodiment, as described above, the outer diameter of the outer periphery of the first rib 6 is formed to be somewhat larger than the inner diameter of the opening end portion 3b of the shroud portion 3. In addition, when overlapping with the opening end portion 3b of the shroud portion 3, since it is elastically deformed so as to expand radially outward, an error in component accuracy between the radiator core support 1 and the fan shroud 2 can be allowed, The first rib 6 and the open end 3b of the shroud 3 can be brought into close contact with each other without causing cracks or breakage.

  In the first embodiment, the fixing hole 3c of the shroud portion 3 and the fixing hole 2e of the fan shroud 2 are fastened by bolts and nuts (not shown), so that the opening end portion 3b of the shroud portion 3 close to the fastening portion. Or the shroud ring part 2c is most easily cracked and broken.

  However, as described above, since the second rib 4 protruding rearward is formed at the upper part of the opening 3a, the required rigidity around the upper part of the opening 3a can be secured and cracking and breakage can be prevented.

  The radiator core support 1 on which the fan 5 and the fan shroud 2 are mounted is mounted on the vehicle in a state where a heat exchanger (not shown) and other peripheral members are mounted.

  And the forced wind by the fan 5 or a vehicle driving | running | working wind distribute | circulates the inner side of each fan ring part 2c by the shroud part 3. FIG.

  At this time, as described above, since the first rib 6 and the open end 3b of the shroud portion 3 are in close contact with each other, there is no possibility of wind entering between them, and transmitted sound and vibration are not generated. It can be prevented from occurring.

  Further, since the second rib 4 protrudes from the open end 3b of the shroud portion 3 toward the first rib 6 along the periphery of the first rib 6, the fan ring from the inside of the shroud portion 3 is provided. The wind which tries to penetrate | invade between the 1st rib 6 and the opening end part 3b of the shroud part 3 toward the inner side of the part 2c can be interrupted | blocked.

  In the first embodiment, the second rib 4 is provided only inside the upper portion of the opening end portion 3b. However, by forming the second rib 4 as long as possible around the opening end portion 3b, the above-described wind blocking effect can be further increased. can get.

Next, the effect will be described.
As described above, in the radiator core support structure according to the first embodiment, the shroud portion 3 of the fan shroud 2 is formed integrally with the radiator core support 1 made of resin, and the shroud portion 3 In the radiator core support 1 structure in which the fan ring portion 2c of the resin-made fan shroud 2 is fixed together with the main body portion 2a to the provided annular opening end portion 3b, the first rib 6 is attached from the outer periphery of the fan ring portion 2c. The first rib 6 and the opening end 3b of the shroud 3 are overlapped with each other so as to project toward the opening end 3b of the shroud 3 in an inclined manner. By elastically deforming so that the diameter of the first rib 6 is increased, the both are fixed in close contact with each other. At the same time it can tolerate errors in component accuracy di eta core support 1 and the fan shroud 2 can be fixed fan ring portion 2c of the open end 3b and the fan shroud 2 of the shroud portion 3 in a state of easily adhered.

  In addition, since the second rib 4 protruding from the opening end 3b of the shroud portion 3 toward the first rib 6 along the periphery of the first rib 6 is provided, the rigidity around the opening end 3b is increased. At the same time, it is possible to block the wind that tends to flow into the open end 3b of the shroud 3 and the fan ring 2c of the fan shroud 2.

Example 2 will be described below.
The radiator core support structure of the second embodiment is the same as that of the first embodiment because it is the same as the fan shroud described in the first embodiment except that the shape of the fan ring part and the opening end of the shroud part are changed. Constituent members are denoted by the same reference numerals, description thereof is omitted, and only differences are described.

  FIG. 7 is an enlarged sectional view of a main part of the radiator core support structure according to the second embodiment of the present invention and is a view for explaining the operation.

As shown in FIG. 7A, in the radiator core support structure according to the second embodiment, the first rib 20 is provided so as to protrude perpendicularly radially outward from a midway portion of the outer periphery of the fan ring portion 2c. On the other hand, the opening end portion 21 of the shroud portion 3 is provided so as to protrude in an inclined manner toward the first rib 20 side.
In addition, the opening end 21 of the second embodiment is formed so as to become narrower as it goes to the tip 21a, whereby the opening end 21 is easily elastically deformed in the front-rear direction.

  Accordingly, as shown in FIGS. 7A and 7B, when the radiator core support 1 and the fan shroud 2 are assembled, the opening end 21 of the shroud portion 3 and the first rib 20 are overlapped to overlap the shroud portion. 3 can be fixed in a state where they are brought into close contact with each other by elastically deforming so that the diameter of the open end 21 is reduced inward in the radial direction, thereby reducing an error in the component accuracy between the radiator core support 1 and the fan shroud 2. At the same time, it can be allowed to be in close contact with each other without requiring excessive force.

  As described above, in the radiator core support structure according to the second embodiment, the shroud portion 3 of the fan shroud 2 is integrally formed with the resin-made radiator core support 1, and the shroud portion 3 includes the shroud portion 3. In the radiator core support 1 structure in which the fan ring portion 2c of the resin fan shroud 2 is fixed together with the main body portion 2a to the annular opening end portion 21 provided, the opening end portion 21 of the shroud portion 3 is connected to the first rib. The opening end 21 of the shroud portion 3 and the first rib 20 are overlapped to reduce the diameter of the opening end portion 21 of the shroud portion 3 inward in the radial direction. Thus, the elastic deformation is performed so that the diameter of the shroud portion 3 is reduced inward in the radial direction of the opening end 21 of the shroud portion 3. Thus at the same time it can tolerate errors in component accuracy radiator core support 1 and the fan shroud 2 can be fixed fan ring portion 2c of the open end 21 and the fan shroud 2 of the shroud portion 3 in a state of easily adhered.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, in the first embodiment, the entire first rib 6 is elastically deformed so as to expand its diameter. However, as shown in FIG. 8, only the tip portion 30 of the first rib 6 is inclined rearward. It may be provided so as to protrude to be elastically deformed. Moreover, as shown in FIG. 9, the tip part 30 of the rib 5 may be provided so as to protrude in an inclined manner toward the front side, and may be elastically deformed.

  Similarly, in the second embodiment, the entire opening end 21 is elastically deformed so as to reduce the diameter. However, as shown in FIG. 10, only the middle part 40 of the opening end 21 is inclined rearward. It may be provided so as to protrude and elastically deform.

  That is, the first rib and the opening end may have any shape as long as the first rib or the opening end can be elastically deformed and brought into close contact with each other. A design change of a simple shape is within the scope of the present invention.

  In the present embodiment, the fan shroud for the double fan has been described. However, the number of fans 5 installed can be determined as appropriate, and the details of the radiator core support 1 and the fan shroud 2 performed according to the number of fans 5 installed. The design change of the shape is within the scope of the present invention.

It is a whole rear view which shows the radiator core support structure of Example 1 of this invention. It is a rear view of the radiator core support of Example 1. It is a rear view of the fan shroud of the first embodiment. FIG. 4 is an end view taken along line S4-S4 in FIG. 3. It is a rear view of the fan of the first embodiment. It is a figure explaining the assembly | attachment of the radiator core support and fan shroud of Example 1. FIG. It is a principal part expanded sectional view in the radiator core support structure of Example 2 of this invention, and is a figure explaining an effect | action. It is a principal part expanded sectional view in the radiator core support structure of another Example, and is a figure explaining an effect | action. It is a principal part expanded sectional view in the radiator core support structure of another Example, and is a figure explaining an effect | action. It is a principal part expanded sectional view in the radiator core support structure of another Example, and is a figure explaining an effect | action.

Explanation of symbols

B1 Bolt M Motor 1 Radiator core support 1a Radiator core support upper 1b Radiator core support lower 1c Radiator core support side 2 Fan shroud 2a Body portion 2b Fan stay portion 2c Fan ring portion 2d Connection portion 2e Fixing hole 2f Fixing portion 2g Mounting pin 3 Shroud 3a Opening 3b, 21 Opening end 3c Fixing hole 3d Insertion receiving part 4 Second rib 5 Fan 5a Ring part 5b Rotating base 5c Blade 6 and 20 First rib 6a and 21a Tip 30, 40 Tip

Claims (4)

A fan shroud portion is integrally formed with the resin radiator core support, and a fan ring portion of the resin fan shroud is fixed together with the main body portion at an annular opening end portion provided in the shroud portion. In the radiator core support structure
Forming a first rib protruding radially outward from the outer periphery of the fan ring portion;
A radiator core support structure characterized in that the first rib and the opening end of the shroud portion are overlapped and the first rib or the opening end is elastically deformed to fix them in close contact with each other. . The radiator core support structure according to claim 1,
The first rib is provided so as to protrude from the outer periphery of the fan ring portion toward the opening end side of the shroud portion, and the first rib and the opening end portion of the shroud portion are overlapped with each other. A radiator core support structure characterized in that one rib is elastically deformed so as to expand radially outward, thereby fixing both ribs in close contact with each other. The radiator core support structure according to claim 1,
An opening end portion of the shroud portion is provided so as to project in an inclined manner toward the first rib side, and the opening end portion of the shroud portion is overlapped with the opening end portion of the shroud portion to form the opening end portion of the shroud portion. A radiator core support structure characterized by being fixed in a state in which both are brought into close contact with each other by being elastically deformed so as to be reduced radially inward. In the radiator core support structure in any one of Claims 1-3,
A radiator core support structure comprising a second rib projecting from the open end of the shroud portion toward the first rib along the periphery of the first rib.

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